atomic frequency
| standard
| atomic frequency | |
| earth.sc. el. | frecuencia atómica |
| standard | |
| construct. | poste |
| cultur. | asta |
| econ. | norma |
| ed. | fijo |
| environ. | norma |
| footwear | patron piano |
| health. | criterio; estándar |
| industr. construct. | patrón plano; estandarte |
| |||
| frecuencia atómica | |||
|
atomic frequency : 6 phrases in 3 subjects |
| Earth sciences | 2 |
| Natural sciences | 1 |
| Technology | 3 |